[v6,0/5] Add RISC-V KVM AIA Support

Message

Yong-Xuan Wang July 14, 2023, 8:44 a.m. UTC

This series adds support for KVM AIA in RISC-V architecture.

In order to test these patches, we require Linux with KVM AIA support which can
be found in the riscv_kvm_aia_hwaccel_v1 branch at
https://github.com/avpatel/linux.git

---
v6:
- fix alignment
- add hart index to the error message of ISMIC address setting in PATCH3

v5:
- remove the linux-header update patch since the riscv-to-apply.next QEMU has
synced up to Linux 6.5-rc1 headers.
- create the APLIC and IMSIC FDT helper functions in PATCH1
- add the irqfd support in PATCH3
- fix the comments and refine the code

v4:
- update the linux header by the scripts/update-linux-headers.sh in PATCH1
- remove the checking for "aplic_m" before creating S-mode APLIC device in PATCH2
- add more setting when we initialize the KVM AIA chip in PATCH4
- fix msi message delivery and the APLIC devices emulation in PATCH5
- fix the AIA devices mapping with NUMA enabled in PATCH6
- add "kvm-aia" parameter to sepecify the KVM AIA mode in PATCH6

v3:
- fix typo
- tag the linux-header patch as placeholder

v2:
- rebase to riscv-to-apply.next
- update the linux header by the scripts/update-linux-headers.sh

Yong-Xuan Wang (5):
  target/riscv: support the AIA device emulation with KVM enabled
  target/riscv: check the in-kernel irqchip support
  target/riscv: Create an KVM AIA irqchip
  target/riscv: update APLIC and IMSIC to support KVM AIA
  target/riscv: select KVM AIA in riscv virt machine

 hw/intc/riscv_aplic.c    |  56 ++++--
 hw/intc/riscv_imsic.c    |  25 ++-
 hw/riscv/virt.c          | 410 ++++++++++++++++++++++-----------------
 include/hw/riscv/virt.h  |   1 +
 target/riscv/kvm.c       | 170 +++++++++++++++-
 target/riscv/kvm_riscv.h |   6 +
 6 files changed, 469 insertions(+), 199 deletions(-)